windows API (Windows Application Program Interface，Windows应用程序接口)是一系列函数、宏、数据类型、数据结构的集合，运行于Windows系统的应用程序，可以使用操作系统提供的接口来实现需要的功能。(Windows API (Windows Application Program Interface, Windows application programming interface) is a set of functions, macros, data types and data structures. It runs on the application system of Windows system, and can use the interfaces provided by the operation system to achieve the required functions.)